Snmp Polling Efficiency: Table VS List of Single OIDs

SNMP4J
1

I want to query the IF-TABLE for a subset of the OIDs in the table.

Out of the IF-TABLE, I am querying for 10 of the 19 columns.

My question is related to efficiency on my system and speed of polling. I am using TableUtils.getTable to make the request.

Which is better(more efficient) to use out of the following?

  1. A single request for each needed column
    i.e. tableUtils.getTable(target, [column-oid])
  2. Send an array of OIDs to the TableUtils.getTable() method containing all or some of the OIDs
    i.e. tableUtils.getTable(target, list-of-column-oids)
  3. Request the entire table and parse out the unneeded data at the end.
    ie. tableUtils.getTable(target, [table-oid]

Thanks in advance for your help.

2

Method 2. is more efficient than the others.

3

Thanks, Frank. Is there any recommendation as to how many column oids is acceptable to be sent in the array of the getTable method?

4

Not really, It depends on the network settings, especially the maximum PDU length the responder can handle. The absolut maximum is 65535 bytes.